@ivanm - Could you please indicate the complete AOS version you are running? As @Jon said, you'll either get the tech preview version of the v3 APIs, or no v3 APIs at all depending on the version you're running.

Above you mentioned 5.1.x but if you could provide the full version we may be able to indicate whether or not that version will allow access to the v3 APIs. For example, 5.1.5 (latest 5.1.x version as I write this) supports tech preview of the v3 APIs, although it's entirely possible that earlier versions of 5.1 didn't.

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